26931963930 has 32 divisors (see below), whose sum is σ = 66721771008. Its totient is φ = 6950184000.

The previous prime is 26931963901. The next prime is 26931963931. The reversal of 26931963930 is 3936913962.

It is a super-2 number, since 2×26931963930² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26931963931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14478621 + ... + 14480480.

It is an arithmetic number, because the mean of its divisors is an integer number (2085055344).

Almost surely, 2^26931963930 is an apocalyptic number.

26931963930 is an abundant number, since it is smaller than the sum of its proper divisors (39789807078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26931963930 is a wasteful number, since it uses less digits than its factorization.

26931963930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28959142.

The product of its (nonzero) digits is 1417176, while the sum is 51.

The spelling of 26931963930 in words is "twenty-six billion, nine hundred thirty-one million, nine hundred sixty-three thousand, nine hundred thirty".